EP2382937B1 - Druckempfindliche Dichtungsplatte - Google Patents
Druckempfindliche DichtungsplatteDownload PDFInfo
- Publication number
- EP2382937B1 EP2382937B1EP11164274.0AEP11164274AEP2382937B1EP 2382937 B1EP2382937 B1EP 2382937B1EP 11164274 AEP11164274 AEP 11164274AEP 2382937 B1EP2382937 B1EP 2382937B1
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- EP
- European Patent Office
- Prior art keywords
- sealing
- plate
- sealing plate
- tissue
- contact
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N30/00—Piezoelectric or electrostrictive devices
- H10N30/01—Manufacture or treatment
- H10N30/03—Assembling devices that include piezoelectric or electrostrictive parts
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B18/04—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating
- A61B18/12—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body by heating by passing a current through the tissue to be heated, e.g. high-frequency current
- A61B18/14—Probes or electrodes therefor
- A61B18/1442—Probes having pivoting end effectors, e.g. forceps
- A61B18/1445—Probes having pivoting end effectors, e.g. forceps at the distal end of a shaft, e.g. forceps or scissors at the end of a rigid rod
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B2018/00053—Mechanical features of the instrument of device
- A61B2018/00059—Material properties
- A61B2018/00071—Electrical conductivity
- A61B2018/00083—Electrical conductivity low, i.e. electrically insulating
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B18/00—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
- A61B2018/00571—Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body for achieving a particular surgical effect
- A61B2018/0063—Sealing
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
- A61B90/06—Measuring instruments not otherwise provided for
- A61B2090/064—Measuring instruments not otherwise provided for for measuring force, pressure or mechanical tension
- A61B2090/065—Measuring instruments not otherwise provided for for measuring force, pressure or mechanical tension for measuring contact or contact pressure
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/42—Piezoelectric device making
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49002—Electrical device making
- Y10T29/49007—Indicating transducer
Definitions
- the present disclosurerelates to an electrosurgical instrument and method for sealing tissue. More particularly, the present disclosure relates to an electrosurgical tool including opposing jaw members having pressure sensors for determining a seal pressure and controlling operation of the electrosurgical tool based on the determined seal pressure.
- Electrosurgical forcepsutilize mechanical clamping action along with electrical energy to effect hemostasis on the clamped tissue.
- the forceps(open, laparoscopic or endoscopic) include electrosurgical sealing plates which apply the electrosurgical energy to the clamped tissue. By controlling the intensity, frequency and duration of the electrosurgical energy applied through the sealing plates to the tissue, the surgeon can coagulate, cauterize, and/or seal tissue.
- tissue sealing proceduresinvolve more than simply cauterizing tissue and blood, to create an effective seal the procedures involve precise control of a variety of factors.
- the pressure applied to the tissueand the gap distance between the electrodes (i.e., distance between opposing jaw members when closed about tissue).
- EP 1 767 143 A1discloses a selectively adjustable stop member assembly for adjusting the distance a stop member extends from a sealing plate for sealing vessel tissue.
- a controlleris used to perform the adjustment and this controller may comprise a piezoelectric actuator.
- an end effector assemblyincluding a pair of opposing jaw members.
- One or more of the jaw membersincludes a support base, an electrical jaw lead, and a sealing plate, which is coupled to the electrical jaw lead.
- the sealing platehas a stainless steel layer and has one or more piezoelectric sensors.
- the jaw memberalso includes an insulative plate disposed between the support base and the sealing plate.
- the insulative platecomprises is a flex circuit having a plastic substrate, and a circuit trace disposed on the substrate and having one or more contacts disposed on the substrate and coupled to the circuit trace.
- the one or more contactsare coupled to the one or more piezoelectric sensors.
- the contactmay be operatively coupled to a controller via a contact trace. That is, the or each contact is/are disposed to receive an electrical signal from a or a respective piezoelectric sensor and the electrical signal is conductible to a controller via the circuit trace.
- the sealing platehas one or more holes formed in a sealing surface thereof and the one or more piezoelectric sensors are disposed in a or a respective hole.
- the one or more holesare one or more through holes of the sealing plate so that the one or more piezoelectric sensors communicate with the underlying one or more contacts disposed on the insulative plate.
- the one or more piezoelectric sensorsare for measuring a seal pressure applied by the jaw members to tissue disposed therebetween.
- the one or more piezoelectric sensorsare exposed by a sealing surface of the sealing plate so as to communicate with tissue in contact with the sealing surface and disposed between the jaw members.
- an electrosurgical instrument for sealing tissueincludes a housing having at least one shaft that extends therefrom, a handle assembly operably coupled to the housing, an optional rotating assembly operably coupled to and configured to rotate the at least one shaft and an end effector assembly disposed at a distal end of the at least one shaft including a pair of opposing jaw members.
- One or more of the jaw membersincludes a support base, an electrical jaw lead, and a sealing plate coupled to the electrical jaw lead.
- the sealing platehas a stainless steel layer and one or more piezoelectric sensors.
- the jaw memberalso includes an insulative plate disposed between the support base and the sealing plate.
- the insulative plateis a flex circuit having a plastic substrate and a circuit trace having one or more contacts coupled thereto.
- the one or more contactsare coupled to one or more piezoelectric sensors.
- the contactmay be operatively coupled to a controller via a contact trace.
- the end effector assemblyincludes the features of the end effector assembly described above.
- a method of constructing a jaw member for an end effector assemblyincludes creating a seal plate by shaping an electrically conductive layer, optionally a stainless steel layer, into a seal plate, applying a first mask to the layer, wherein the first mask exposes a portion of the layer, etching the exposed portion of the layer to create one or more holes in the stainless steel layer and removing the mask.
- An insulative plateis also created by providing an insulative plastic substrate, insulatie optional plastic, adhering a conductive layer to the substrate, applying a second mask to the conductive layer, wherein the second mask exposes a portion of the conductive layer to outline one or more circuit traces and one or more contacts, etching the exposed portion of the conductive layer to provide the one ore more circuit traces and the one or more contacts, and removing the mask.
- a support baseis provided and the insulative plate is attached to the support base and the seal plate is attached on top of the insulative plate so that the one or more holes of the seal plate overlaps the one or more contacts of the insulative plate.
- a piezoelectric sensoris coupled to the at least one contact of the insulative plate. The piezoelectric sensor may be disposed in the one or more holes of the seal plate.
- proximalrefers to the end of the apparatus which is closer to the user and the term “distal” refers to the end of the apparatus which is further away from the user.
- distalrefers to the end of the apparatus which is further away from the user.
- clinicalrefers to any medical professional (i.e., doctor, surgeon, nurse, or the like) performing a medical procedure involving the use of embodiments described herein.
- the present disclosureis directed the use of piezoelectric sensors in a vessel sealing procedure. More specifically, piezoelectric sensors are used instead of conventional ceramic stop members. The piezoelectric sensors provide a seal pressure to a controller that adjusts the closure pressure of the jaw members according to open loop or closed loop feedback mechanisms. By using piezoelectric sensors instead of stop members, jaw members may be made smaller as well as provide better controlled sealing of certain tissue types or new tissue types.
- an instrumentgenerally identified as forceps 10 is for use with various surgical procedures and includes a housing 20, a handle assembly 30, a rotating assembly 80, a trigger assembly 70, and an end effector assembly 100 that mutually cooperate to grasp, seal, and divide tubular vessels and vascular tissues.
- Forceps 10includes a shaft 12 that has a distal end 16 dimensioned to mechanically engage the end effector assembly 100 and a proximal end 14 that mechanically engages the housing 20.
- the end effector assembly 100includes opposing jaw members 110 and 120, which cooperate to effectively grasp tissue for sealing purposes.
- the end effector assembly 100is a bilateral assembly, i.e., both jaw members 110 and 120 pivot relative to one another about a pivot pin 95. Unilateral jaw assemblies may also be contemplated.
- the jaw members 110 and 120are curved to facilitate manipulation of tissue and to provide better "line of sight" for accessing targeted tissues.
- Forceps 200includes a pair of opposing shafts 212a and 212b having an end effector assembly 230 attached to the distal ends 216a and 216b thereof, respectively.
- End effector assembly 230is similar in design to end effector assembly 100 and includes pair of opposing jaw members 232 and 234 that are pivotably connected about a pivot pin 265 and which are movable relative to one another to grasp tissue.
- Each shaft 212a and 212bincludes a handle 215 and 217, respectively, disposed at the proximal end 214a and 214b thereof which each define a finger hole 215a and 217a, respectively, therethrough for receiving a finger of the user.
- Finger holes 215a and 217afacilitate movement of the shafts 212a and 212b relative to one another which, in turn, pivot the jaw members 232 and 234 from an open position wherein the jaw members 232 and 234 are disposed in spaced relation relative to one another to a clamping or closed position wherein the jaw members 232 and 234 cooperate to grasp tissue therebetween.
- Figs. 3A and 3Bare perspective views of the opposing jaw members 310 and 320. Similar to jaw members 110 and 120, each of the jaw members 310 and 320 include: sealing plates 312 and 322, respectively; electrical jaw leads 325a and 325b, respectively; and support bases 316 and 326 formed as plastic overmolds. Electrical jaw leads 325a and 325b supply energy to at least one of the opposing jaw members 310 and 320.
- the opposing jaw members 310 and 320include support bases 316 and 326 that each extend distally from flanges 313 and 323, respectively.
- the support bases 316 and 326are dimensioned to support insulative plates 319' and 329', which in turn, support electrically conductive sealing plates 312 and 322 thereon. It is contemplated that sealing plates 312 and 322 may be affixed atop the insulative plates 319' and 329', respectively, and support bases 319 and 329, respectively, in any known manner in the art, snap-fit, over-molding, stamping, ultrasonically welded, etc.
- the support bases 319 and 329, insulative plates 319' and 329', and sealing plates 312 and 322are encapsulated by the outer insulative housings 316 and 326 by way of a subsequent overmolding process.
- the jaw members 310 and 320are connected via an ultrasonic weld to electrical jaw leads 325a and 325b, respectively.
- the jaw members 310 and 320also include proximal flanges 313 and 323 extending proximally from the support bases 319 and 329, respectively, each of which includes an elongated angled cam slot 317 and 327, respectively, defined therethrough
- the jaw member 320also includes a series of piezoelectric sensors 390 disposed on the inner facing surface of an electrically conductive sealing plate 312 to define a gap between opposing sealing surfaces during sealing and cutting of tissue. In one embodiment, the gap is between about .001" and .006"; however, other suitable gaps are contemplated by the present disclosure.
- the series of piezoelectric sensors 390are applied onto the sealing plate 312 during manufacturing.
- the electrically conductive sealing plates 312 and 322 and the insulative plates 319' and 329'include respective longitudinally-oriented knife slots 315a, 315a' and 315b, 315b', respectively, defined therethrough for reciprocation of the knife blade (not shown).
- Insulative plate 329'is a flex circuit. Flex circuits are used to assemble electronic circuits by mounting electronic devices on flexible plastic substrates. Such plastic substrates may include, but are not limited to, polyimide or polyether ether ketone (PEEK) film. Flex circuits may also be constructed by screen printing silver or copper circuits onto polyester. As shown in Fig. 5A insulative plate 329' has a substrate 510 having circuit traces 520 formed thereon. Circuit traces 520 may be made from copper, silver, or any other electrical conductor. Circuit traces 520 may be formed by any suitable method. For instance, circuit traces 520 may be formed by adhering a conductive layer to substrate 510. Using photolithography, a mask outlining circuit traces 520 may be formed and then the conductive layer may be etched to leave circuit traces 520.
- PEEKpolyether ether ketone
- Circuit traces 520include contacts 524 that may be made from copper, silver or any other suitable electrical conductor. Contacts 524 may be made from the same material as circuit traces 520 or from a material different from circuit traces 520. Each contact 524 is operatively coupled to controller 620 ( Fig. 6 ) via contact traces 522. Contacts 524 and contact traces 522 are formed using the same techniques that may be used to form circuit traces 524. The location of contacts 524 correspond to the location of piezoelectric sensors 390. Accordingly, when piezoelectric sensors 390 determine a seal pressure, piezoelectric sensors 390 provide a signal to controller 620 indicative of the seal pressure via contacts 524 and contact traces 522.
- Fig. 5Bdepicts a top view of seal plate 322.
- Seal plate 322is made from stainless steel, and as described above, has piezoelectric sensors 390 disposed therein in locations 530.
- Seal plate 322may be formed by any suitable method. For instance, a layer of stainless steel may be provided and shaped to form seal plate 322. Then, a photolithography mask is applied to seal plate 322 leaving locations 530 exposed. An etching solution is applied to seal plate 322 to etch away exposed locations 530. Then the mask is removed leaving seal plate 322 with locations 530 etched away.
- piezoelectric sensors 390are placed in locations 530 of seal plate 322 and are coupled to contacts 524 of insulative plate 329'. Locations 530 may also be formed from other suitable methods, such as punching, drilling, etc.
- Fig. 6shows a schematic block diagram of the generator 600 having a controller 620, a power supply 627, an RF output stage 628, and a sensor module 622.
- the power supply 627provides DC power to the RF output stage 628 which then converts the DC power into RF energy and delivers the RF energy to the instrument 10.
- the controller 620includes a microprocessor 625 having a memory 626 which may be volatile type memory (e.g., RAM) and/or non-volatile type memory (e.g., flash media, disk media, etc.).
- the microprocessor 625includes an output port connected to the power supply 627 and/or RF output stage 628 that allows the microprocessor 625 to control the output of the generator 600 according to either open and/or closed control loop schemes.
- a closed loop control schemegenerally includes a feedback control loop wherein the sensor module 622 provides feedback to the controller 24 (e.g., information obtained from one or more sensing mechanisms for sensing various tissue parameters such as tissue impedance, tissue temperature, output current and/or voltage, etc.).
- the controller 620then signals the power supply 627 and/or RF output stage 628 which then adjusts the DC and/or RF power supply, respectively.
- the controller 620also receives input signals from the input controls of the generator 600 and/or instrument 10.
- the controller 620utilizes the input signals to adjust the power output of the generator 600 and/or instructs the generator 20 to perform other control functions.
- the microprocessor 625is capable of executing software instructions for processing data received by the sensor module 622, and for outputting control signals to the generator 600, accordingly.
- the software instructions, which are executable by the controller 620,are stored in the memory 626 of the controller 620.
- the controller 620may include analog and/or logic circuitry for processing the sensed values and determining the control signals that are sent to the generator 600, rather than, or in combination with, the microprocessor 625.
- the sensor module 622may include a plurality of sensors (not explicitly shown) strategically located for sensing various properties or conditions, e.g., tissue impedance, voltage at the tissue site, current at the tissue site, etc.
- the sensorsare provided with leads (or wireless) for transmitting information to the controller 620.
- the sensor module 622may include control circuitry that receives information from multiple sensors, and provides the information and the source of the information (e.g., the particular sensor providing the information) to the controller 620.
- the sensor module 622may include a real-time voltage sensing system (not explicitly shown) and a real-time current sensing system (not explicitly shown) for sensing real-time values related to applied voltage and current at the surgical site. Additionally, an RMS voltage sensing system (not explicitly shown) and an RMS current sensing system (not explicitly shown) may be included for sensing and deriving RMS values for applied voltage and current at the surgical site.
- the generator 600includes suitable input controls (e.g., buttons, activators, switches, touch screen, etc.) for controlling the generator 600, as well as one or more display screens for providing the surgeon with variety of output information (e.g., intensity settings, treatment complete indicators, etc.).
- the controlsallow the surgeon to adjust power of the RF energy, waveform, and other parameters to achieve the desired waveform suitable for a particular task (e.g., tissue ablation).
- the instrument 10may include a plurality of input controls which may be redundant with certain input controls of the generator 600. Placing the input controls at the instrument 10 allows for easier and faster modification of RF energy parameters during the surgical procedure without requiring interaction with the generator 600.
- a generator 600can perform monopolar and bipolar electrosurgical procedures, including tissue ablation procedures.
- the generatormay include a plurality of outputs for interfacing with various electrosurgical instruments (e.g., a monopolar active electrode, return electrode, bipolar electrosurgical forceps, footswitch, etc.).
- various electrosurgical instrumentse.g., a monopolar active electrode, return electrode, bipolar electrosurgical forceps, footswitch, etc.
- the generatorincludes electronic circuitry configured for generating radio frequency power specifically suited for various electrosurgical modes (e.g., cutting, blending, division, etc.) and procedures (e.g., monopolar, bipolar, vessel sealing).
- Piezoelectric sensors 390are configured to automatically sense the sealing pressure on the tissue disposed between the jaw members 110 and 120 and provide feedback to controller 620 during the sealing process. Controller 620 may then regulate and adjust the closure pressure between the jaw members 110 and 120 during the sealing process to enhance the tissue seal.
- piezoelectric sensors 390may be coupled to the control assembly via an open loop or closed loop feedback system to regulate the seal pressure on the tissue between the jaw members 110 and 120. It is important to note that the closure pressure of the jaw members 110 and 120 correlates to, but is not necessarily the same as, the sealing pressure on the tissue disposed between the jaw members 110 and 120.
- the piezoelectric sensors 390measure the sealing pressure on the tissue and relay the sealing pressure information back to controller 620 which operatively communicates with instrument 10 to adjust the seating pressure based upon the information provided by piezoelectric sensors 390 and the desired sealing pressure according to a predetermined seal pressure profile.
- Instrument 10may include a pressure controller 630 that is operatively coupled to the shaft 12 of the forceps 10.
- the pressure controller 630may be any type of electrical, or electro-mechanical mechanism that adjusts the force on the drive assembly (not shown) to increase or decrease the closure pressure of the jaw members 110 and 120 which, in turn, increases or decreases the seal pressure on the tissue disposed therebetween.
- a servo motor, gear assembly, hydraulic mechanism, worm drive, etc.may be coupled to the shaft 12 and operatively coupled to the drive assembly (not shown) to provide additional force to the drive assembly (not shown) as per the information.
- the initial closure pressure between the jaw members 110 and 120 upon actuation of the handle assembly 30 and locking of the moveable handle 40 relative to the fixed handle 50is about 3 kg/cm 2 to about 16kg/cm 2 .
- the sealing pressure on the tissuemay or may not fall within this range.
- the piezoelectric sensors 390may be configured to initially determine the sealing pressure on tissue prior to initial activation of the forceps. For example, the piezoelectric sensors 390 may determine that additional force needs to be provided to the drive assembly (not shown) to increase the closure pressure of the jaw members 110 and 120 which, in turn, increases the sealing pressure of the tissue 400.
- the appropriate sealing pressure for initial activationmay be based upon a predetermined pressure profile stored within memory 626, which may be based on tissue type, tissue temperature, tissue size, etc. If more or less sealing pressure on tissue is required, controller 620 communicates with the pressure controller 630 to regulate the closure force of the jaw members 110 and 120. For example, white the handle 40 is locked relative to fixed handle 50, the pressure controller may be configured to provide +/- 10kg/cm 2 when required to match a predetermined pressure profile or pressure algorithm.
- the piezoelectric sensors 390, controller 620 and the pressure controller 630all cooperate to regulate the sealing pressure on tissue to conform to a predetermined pressure profile or pressure algorithm.
- the pressure controller 630may be instructed by controller 620 to increase the closure pressure on the jaw members 110 and 120 (which increases the sealing pressure on tissue 400) due to the tissue shrinking during the sealing process.
- the seal pressuremay be cycled during electrical activation based upon a predetermined sinusoidal pressure profile to enhance the tissue seal.
- the piezoelectric sensors 390may interact sequentially, simultaneously or in another manner to sense feedback from the tissue and determine the sealing pressure.
- the proceduremay be automated using a series of piezoelectric sensors 390, controller 620 and pressure controller 630.
- the sealing pressure control system described hereinis believed to provide more effective sealing of tissue especially large tissue structures, such as lung tissue.
- the sealing pressure on the tissueis monitored and adjusted during activation based upon a continually-sensed surgical condition from the piezoelectric sensors 390 utilizing an open or closed feed back control loop.
- the pressure controller 630may be manual, where the gauge instructs a user through a visual or audible indicator to increase or decrease the closure pressure on the jaw to in turn adjust the sealing pressure on the tissue.
- a method for sealing tissue using the forceps 10includes the initial step 602 of providing an electrosurgical instrument, e.g., forceps 10, including one or more shafts 12 having an end effector assembly 100 at a distal end thereof, the end effector assembly 100 including a pair of opposing jaw members 110 and 120 movable from a first spaced apart position to a second position for grasping tissue.
- At least one jaw member, e.g., 110is adapted to connect to an electrical energy source.
- at least one jaw member 110is actuated to the second position for grasping tissue.
- the closing pressure between the jaw membersis regulated by controlling the actuator in step 606.
- the instrument 10senses a seal pressure of tissue 400 disposed between the jaw members 110 and 120 in step 608 and provides feedback to controller 620 regarding the seal pressure of tissue disposed between the jaw members 110 and 120.
- the pressure controller 630adjusts the closing pressure to regulate the seal pressure of the jaw members 110 and 120 on the tissue during the sealing process to within a predetermined range.
- the seal pressuremay be determined prior to initial activation of the forceps, continually-sensed during the sealing process and/or after activation to determine seal quality.
- the seal pressuremay be regulated according to a seal pressure profile (e.g., sinusoidal) or seal pressure algorithm.
- the seal pressuremay be cycled during electrical activation based upon a predetermined pressure profile or pressure algorithm.
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Claims (9)
- Endeffektoraufbau einschließlich eines Paares sich gegenüberliegender Backenelemente (310, 320), wobei mindestens eines der Backenelemente aufweist:einen Basisträger (316, 326);eine elektrische Backenleitung (325a, 325b);eine Versiegelungsplatte (312, 322), die mit der elektrischen Backenleitung gekoppelt ist, wobei die Versiegelungsplatte eine rostfreie Stahlschicht und mindestens einen piezoelektrischen Sensor (390) aufweist; undeine isolierende Platte (319', 329'), die zwischen dem Basisträger und der Versiegelungsplatte angeordnet ist,
dadurch gekennzeichnet, dassdie isolierende Platte eine flexible Leiterplatte ist, mit:einem Kunststoffsubstrat (510); undeiner Leiterbahn (520, 524), die mindestens einen mit ihr gekoppelten Kontakt aufweist, wobei der mindestens eine Kontakt mit dem mindestens einen piezoelektrischen Sensor gekoppelt ist. - Endeffektoraufbau nach Anspruch 1, bei dem der Kontakt eingerichtet ist, sich betriebsfähig über eine Kontaktbahn mit einer Steuerung zu koppeln.
- Endeffektoraufbau nach Anspruch 1 oder 2, bei dem der piezoelektrische Sensor relativ zu der Versiegelungsplatte erhoben ist und eingerichtet ist, einen Spalt zwischen gegenüberliegenden Versiegelungsplatten der Backenelemente zu erzeugen.
- Elektrochirurgisches Instrument zum Versiegeln von Gewebe, mit:einem Gehäuse, das mindestens einen Schaft (12, 212a, 212b) aufweist, der sich von diesem erstreckt;einem Griffaufbau (30, 215, 217), der betriebsfähig an das Gehäuse gekoppelt ist; unddem Endeffektoraufbau aus Anspruch 1.
- Elektrochirurgisches Instrument nach Anspruch 4, bei dem der Kontakt eingerichtet ist, über eine Kontaktbahn betriebsfähig mit einer Steuerung gekoppelt zu sein.
- Endeffektoraufbau nach Anspruch 4 oder 5, bei dem der piezoelektrische Sensor relativ zu der Versiegelungsplatte erhoben ist und eingerichtet ist, einen Spalt zwischen gegenüberliegenden Versiegelungsplatten der Backenelemente zu erzeugen.
- Verfahren zum Aufbau eines Backenelements für einen Endeffektoraufbau, das Verfahren umfassend:Erzeugen einer Versiegelungsplatte (312, 322) durch Ausbilden einer rostfreien Stahlschicht in der Versiegelungsplatte;Aufbringen einer ersten Maske auf die rostfreie Stahlschicht, wobei die erste Maske einen Abschnitt (530) der rostfreien Stahlschicht exponiert;Ätzen des exponierten Abschnitts der rostfreien Stahlschicht, um mindestens ein Loch in der rostfreien Stahlschicht zu erzeugen und Entfernen der Maske;Erzeugen einer isolierenden Platte (319', 329') durch:Bereitstellen eines Kunststoffsubstrats (510);Anhaften einer leitfähigen Schicht an das Kunststoffsubstrat;Aufbringen einer zweiten Maske auf die leitfähige Schicht, wobei die zweite Maske einen Abschnitt der leitfähigen Schicht exponiert, um zumindest eine Leiterbahn (520, 524) und mindestens einen Kontakt (524) zu umreißen; undÄtzen des exponierten Abschnitts der leitfähigen Schicht und Entfernen der Maske;Bereitstellen eines Basisträgers;Anbringen der isolierenden Platte an den Basisträger (316, 326);Anbringen der Versiegelungsplatte auf der isolierenden Platte, sodass sich das mindestens eine Loch der Versiegelungsplatte und der mindestens eine Kontakt der isolierenden Platte überlappen; undKoppeln eines piezoelektrischen Sensors (390) an den mindestens einen Kontakt der isolierenden Platte.
- Verfahren nach Anspruch 7, bei dem der piezoelektrische Sensor in dem mindestens einen Loch der Versiegelungsplatte angeordnet ist.
- Verfahren nach Anspruch 7 oder 8, bei dem der piezoelektrische Sensor relativ zu der Versiegelungsplatte erhoben ist und eingerichtet ist, einen Spalt zwischen gegenüberliegenden Versiegelungsplatten der Backenelemente zu erzeugen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP13173006.1AEP2641558B1 (de) | 2010-04-29 | 2011-04-29 | Druckempfindliche Dichtungsplatte |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US12/770,369US8439913B2 (en) | 2010-04-29 | 2010-04-29 | Pressure sensing sealing plate |
Related Child Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP13173006.1ADivisionEP2641558B1 (de) | 2010-04-29 | 2011-04-29 | Druckempfindliche Dichtungsplatte |
| EP13173006.1ADivision-IntoEP2641558B1 (de) | 2010-04-29 | 2011-04-29 | Druckempfindliche Dichtungsplatte |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP2382937A1 EP2382937A1 (de) | 2011-11-02 |
| EP2382937B1true EP2382937B1 (de) | 2015-05-27 |
Family
ID=44260831
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP13173006.1AActiveEP2641558B1 (de) | 2010-04-29 | 2011-04-29 | Druckempfindliche Dichtungsplatte |
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| JP (1) | JP5714407B2 (de) |
| AU (1) | AU2011201958B2 (de) |
| CA (1) | CA2738311C (de) |
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| US10231782B2 (en) | 2012-09-06 | 2019-03-19 | Covidien Lp | Medical devices and methods incorporating frustrated total internal reflection for energy-efficient sealing and cutting of tissue using light energy |
| EP2956096A1 (de) | 2013-02-15 | 2015-12-23 | Allergan, Inc. | Implantat mit langzeit-wirkstofffreisetzung |
| FR3011095B1 (fr) | 2013-09-26 | 2016-12-23 | Valeo Vision | Filtre optique adaptatif pour verre de lunettes |
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| US20130247343A1 (en) | 2013-09-26 |
| AU2011201958A8 (en) | 2014-11-20 |
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| EP2641558B1 (de) | 2015-07-08 |
| US20110270252A1 (en) | 2011-11-03 |
| CA2738311A1 (en) | 2011-10-29 |
| CA2738311C (en) | 2018-04-10 |
| US20160175036A1 (en) | 2016-06-23 |
| EP2641558A1 (de) | 2013-09-25 |
| EP2382937A1 (de) | 2011-11-02 |
| JP2011229922A (ja) | 2011-11-17 |
| JP5714407B2 (ja) | 2015-05-07 |
| US9918783B2 (en) | 2018-03-20 |
| US11557714B2 (en) | 2023-01-17 |
| US8439913B2 (en) | 2013-05-14 |
| US20180168718A1 (en) | 2018-06-21 |
| US9318691B2 (en) | 2016-04-19 |
| AU2011201958B2 (en) | 2014-11-20 |
| US20210091299A1 (en) | 2021-03-25 |
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